The former CIA asset on his latest venture: After being 'blowtorched' by U.S. politics, he says, this time he's working for Beijing.

Erik Prince—ex-Navy SEAL, ex-CIA spy, ex-CEO of private-security firm Blackwater—calls himself an "accidental tourist" whose modest business boomed after 9/11, expanded into Iraq and Afghanistan, and then was "blowtorched by politics." To critics and conspiracy theorists, he is a mercenary war-profiteer. To admirers, he's a patriot who has repeatedly answered America's call with bravery and...